Phylum Porifera Grant, 1836 - sponges
Count: [o†f] 3c;29o;74f; †1c;9o;134f [17 Jul 2018]
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
  Count: [o†f] 18o;41f; †5o;82f;531g [17 Jul 2018]
     Subclass Tetractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885
    Count: [†g] †2o;4f;30g [16 Jul 2018]
       Order †Hadromerida Topsent, 1894
      Count: [†g] †3f;17g [16 Jul 2018]
         Family †Polysiphonidae Girty, 1909
        Count: [†g] †3g
           Genus †Polysiphon Girty, 1908
          Count: -